tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test field variable support
   4
   5 fail() { #msg
   6     echo $1
   7     exit_fail
   8 }
   9
  10 if [ ! -f set_event ]; then
  11     echo "event tracing is not supported"
  12     exit_unsupported
  13 fi
  14
  15 if [ ! -f synthetic_events ]; then
  16     echo "synthetic event is not supported"
  17     exit_unsupported
  18 fi
  19
  20 echo "Test field variable support"
  21
  22 echo 'wakeup_latency u64 lat; pid_t pid; int prio; char comm[16]' > synthetic_events
  23 echo 'hist:keys=comm:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
  24 echo 'hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).wakeup_latency($wakeup_lat,next_pid,sched.sched_waking.prio,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
  25 echo 'hist:keys=pid,prio,comm:vals=lat:sort=pid,prio' > events/synthetic/wakeup_latency/trigger
  26
  27 ping $LOCALHOST -c 3
  28 if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
  29     fail "Failed to create inter-event histogram"
  30 fi
  31
  32 if ! grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
  33     fail "Failed to create histogram with field variable"
  34 fi
  35
  36 echo '!hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).wakeup_latency($wakeup_lat,next_pid,sched.sched_waking.prio,next_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger
  37
  38 if grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
  39     fail "Failed to remove histogram with field variable"
  40 fi
  41
  42 exit 0